import gdb-1999-11-01 snapshot

[thirdparty/binutils-gdb.git] / gdb / configure.in

diff --git a/gdb/configure.in b/gdb/configure.in
index 55ded716bf549afa911fff9e44b054983fc480a9..8435420a91a82175193e3316368bb8ad31b79e08 100644 (file)
--- a/gdb/configure.in
+++ b/gdb/configure.in
@@ -92,6 +92,24 @@ AC_C_CONST
 AC_CHECK_FUNCS(setpgid sbrk sigaction isascii bzero bcopy btowc poll sigprocmask)
 AC_FUNC_ALLOCA
 
+dnl See if ptrace.h provides the PTRACE_GETXFPREGS request.
+dnl PTRACE_GETXFPREGS is a Cygnus invention, since we wrote our own
+dnl Linux kernel patch for SSE support.  That patch may or may not
+dnl actually make it into the official distribution.  If you find that
+dnl years have gone by since this configure test was added, and Linux
+dnl isn't using PTRACE_GETXFPREGS, that means that our patch didn't
+dnl make it, and you can delete this code.
+AC_MSG_CHECKING(for PTRACE_GETXFPREGS)
+AC_CACHE_VAL(gdb_cv_have_ptrace_getxfpregs,
+[AC_TRY_COMPILE([#include <sys/ptrace.h>],
+               [PTRACE_GETXFPREGS;],
+               [gdb_cv_have_ptrace_getxfpregs=yes],
+               [gdb_cv_have_ptrace_getxfpregs=no])])
+AC_MSG_RESULT($gdb_cv_have_ptrace_getxfpregs)
+if test $gdb_cv_have_ptrace_getxfpregs = yes; then
+  AC_DEFINE(HAVE_PTRACE_GETXFPREGS)
+fi
+
 AC_CHECK_LIB(socket, socketpair)
 AC_CHECK_FUNCS(socketpair)